noun, masculine/sɛ̃/plural: seins
breast (the chest); breast; womb; bosom
“Sur votre jeune sein laissez rouler ma tête.” — Let my head roll on your young breast.
Synonyms: poitrine, boule, nichon, nibard, nib, tété, lolo, néné
Inherited from Old French sein, from Latin sinus, from Proto-Italic *sinus, from Proto-Indo-European *sinos. Doublet of sinus. Compare Italian seno, Romanian sân, Romansh sain, Portuguese seio, Spanish seno.